import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:ikar/frontend/widgets/undo_notification.dart';
import 'package:ikar/l10n/app_localizations.dart';

void main() {
  Future<void> pump(
    WidgetTester tester,
    void Function(BuildContext) show,
  ) async {
    await tester.pumpWidget(
      MaterialApp(
        locale: const Locale('ru'),
        localizationsDelegates: AppLocalizations.localizationsDelegates,
        supportedLocales: AppLocalizations.supportedLocales,
        home: Scaffold(
          body: Builder(
            builder: (context) => TextButton(
              onPressed: () => show(context),
              child: const Text('delete'),
            ),
          ),
        ),
      ),
    );
    await tester.tap(find.text('delete'));
    await tester.pump();
  }

  testWidgets('undo cancels deletion and cannot later commit', (tester) async {
    var committed = 0;
    var cancelled = 0;
    late PendingUndo pending;
    await pump(tester, (context) {
      pending = showUndoNotification(
        context,
        'pending',
        onCommit: () {
          committed++;
        },
        onUndo: () {
          cancelled++;
        },
      );
    });
    pending.undo();
    pending.commit();
    await tester.pumpAndSettle();
    expect(committed, 0);
    expect(cancelled, 1);
  });

  testWidgets('expiration commits once despite repeated callbacks', (
    tester,
  ) async {
    var committed = 0;
    late PendingUndo pending;
    await pump(tester, (context) {
      pending = showUndoNotification(
        context,
        'pending',
        duration: const Duration(seconds: 1),
        onCommit: () {
          committed++;
        },
        onUndo: () {},
      );
    });
    await tester.pump(const Duration(seconds: 2));
    pending.commit();
    await tester.pumpAndSettle();
    expect(committed, 1);
  });
}